Compared & ranked

The 5 Best Ways to Weigh Things With Your Phone (2026)

Phones can't feel weight through the screen — so every "scale app" works around that limit differently. We compared the four real approaches (and one fake one): AI photo estimation, sensor balancing, real hardware with a companion app, body-weight trackers and simulators.

Last updated July 6, 2026 · Scale for Grams is our app — the comparison below says so plainly and links every competitor.

1

Scale for Grams

Our app

AI photo estimation · iOS · Web · Free (2 scans/day web; subscription for unlimited on iOS)

Photographs the object and estimates weight with computer vision, returning grams, kilograms, pounds and ounces at once. Typical accuracy is within 10–20% for common items — an estimate, not a certified measurement. Also identifies plants, counts objects, reads dimensions and analyzes meal calories.

Pros

  • + Works on anything the camera can see
  • + No hardware, no balancing tricks
  • + Extra modes: calories, size, count, currency

Cons

  • − Estimates, not certified precision
  • − Needs a clear photo and good lighting

Best for: Instant estimates of everyday objects when no scale is around

Try it free →
2

Working Scale Free

Phone sensors (accelerometer) · Android (APK sideload) · Free

Long the best-known sensor-based scale app: you balance your phone on a rounded object, place the item on top, and it estimates mass from how the device tilts. It targets small items (roughly 5–100 g) and needs careful setup. Note: it was removed from Google Play around November 2022 and today survives only as an APK on mirror sites like Uptodown.

Pros

  • + Genuinely measures (not a simulation)
  • + Free

Cons

  • − No longer on Google Play (delisted 2022) — APK sideload only
  • − Android only
  • − Fiddly balancing setup
  • − Small weight range
  • − Risk to your phone

Best for: Android users weighing very small items who enjoy the physics-experiment setup

Visit →
3

Kitchen scale + companion app

Real load-cell hardware · Hardware + iOS/Android · From ~$10–30 for the scale

A physical digital scale is still the accuracy king — typically ±1 g. Smart models (Etekcity, Greater Goods and others) pair with apps for nutrition logging. The obvious trade-off: you have to buy, store and carry a device.

Pros

  • + True ±1 g accuracy
  • + No estimation involved

Cons

  • − Costs money
  • − Not in your pocket when you need it

Best for: Baking, precise portioning and anything where ±1 g matters

Visit →
4

Happy Scale

Body-weight trend tracking · iOS · Free with premium tier

Often found in "scale app" searches, but it does something different: it smooths daily body-weigh-ins from a bathroom scale into trends. Excellent at that job — it does not weigh objects at all.

Pros

  • + Great trend math for weigh-ins

Cons

  • − Cannot weigh objects
  • − Needs a real bathroom scale

Best for: Tracking your own body weight over time

Visit →
5

Digital scale simulator apps

Simulation / novelty · iOS · Android · Usually free with ads

A large family of apps that display a scale interface but cannot measure anything — modern phone screens do not sense weight (Apple removed 3D Touch years ago). Fine as a prank; frequently reviewed as misleading by users expecting real readings.

Pros

  • + Looks like a scale

Cons

  • − Measures nothing
  • − Often ad-heavy
  • − Misleading listings

Best for: Jokes only

Visit →

Verdict

If you need certified precision, buy a real kitchen scale — nothing on a phone replaces a load cell. For everything else, the practical question is speed: when you just want to know roughly what something weighs, photographing it beats balancing your phone on a bottle cap. That's the niche Scale for Grams is built for, and why it ranks first here — with the honest caveat that it produces estimates, not measurements. Android users who enjoy tinkering should absolutely try Working Scale Free too.

Related comparisons

Scale for Grams vs Working ScaleScale App vs Kitchen ScaleFree unit converters